{"id":12506,"date":"2021-08-31T14:08:32","date_gmt":"2021-08-31T18:08:32","guid":{"rendered":"https:\/\/ventilation-maximum.com\/?p=12506"},"modified":"2023-11-08T08:41:00","modified_gmt":"2023-11-08T13:41:00","slug":"understanding-attic-ventilation","status":"publish","type":"post","link":"https:\/\/ventilation-maximum.com\/en\/attic-ventilation-tips\/understanding-attic-ventilation\/","title":{"rendered":"Understanding Attic Ventilation"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"12506\" class=\"elementor elementor-12506\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1fabfd08 elementor-section-height-min-height elementor-section-full_width elementor-section-height-default elementor-section-items-middle\" data-id=\"1fabfd08\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-33eef8aa\" data-id=\"33eef8aa\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-452c9c4a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"452c9c4a\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-5c2ef539\" data-id=\"5c2ef539\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-12de0b45 elementor-widget elementor-widget-heading\" data-id=\"12de0b45\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Understanding Attic Ventilation<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-29cd99a4\" data-id=\"29cd99a4\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4ab612c9 elementor-widget elementor-widget-video\" data-id=\"4ab612c9\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;youtube_url&quot;:&quot;https:\\\/\\\/youtu.be\\\/DTh_6Plj7X4&quot;,&quot;image_overlay&quot;:{&quot;url&quot;:&quot;https:\\\/\\\/ventilation-maximum.com\\\/wp-content\\\/uploads\\\/2020\\\/12\\\/cropped-VMAX-301-12-BLACK-ver-8-FINAL.png&quot;,&quot;id&quot;:1351,&quot;size&quot;:&quot;&quot;},&quot;lightbox&quot;:&quot;yes&quot;,&quot;autoplay&quot;:&quot;yes&quot;,&quot;loop&quot;:&quot;yes&quot;,&quot;show_image_overlay&quot;:&quot;yes&quot;,&quot;video_type&quot;:&quot;youtube&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-wrapper elementor-open-lightbox\">\n\t\t\t\t\t\t\t<div class=\"elementor-custom-embed-image-overlay\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox=\"{&quot;type&quot;:&quot;video&quot;,&quot;videoType&quot;:&quot;youtube&quot;,&quot;url&quot;:&quot;https:\\\/\\\/www.youtube.com\\\/embed\\\/DTh_6Plj7X4?feature=oembed&amp;playlist=DTh_6Plj7X4&amp;start&amp;end&amp;wmode=opaque&amp;loop=1&amp;controls=0&amp;mute=0&amp;rel=0&amp;cc_load_policy=0&quot;,&quot;autoplay&quot;:&quot;yes&quot;,&quot;modalOptions&quot;:{&quot;id&quot;:&quot;elementor-lightbox-4ab612c9&quot;,&quot;entranceAnimation&quot;:&quot;&quot;,&quot;entranceAnimation_tablet&quot;:&quot;&quot;,&quot;entranceAnimation_mobile&quot;:&quot;&quot;,&quot;videoAspectRatio&quot;:&quot;169&quot;}}\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%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%3D%3D\">\n\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"512\" height=\"512\" src=\"https:\/\/ventilation-maximum.com\/wp-content\/uploads\/2020\/12\/cropped-VMAX-301-12-BLACK-ver-8-FINAL.png\" class=\"attachment-full size-full wp-image-1351\" alt=\"Slant Back Roof Vents - Ventilation Maximum\" srcset=\"https:\/\/ventilation-maximum.com\/wp-content\/uploads\/2020\/12\/cropped-VMAX-301-12-BLACK-ver-8-FINAL.png 512w, https:\/\/ventilation-maximum.com\/wp-content\/uploads\/2020\/12\/cropped-VMAX-301-12-BLACK-ver-8-FINAL-300x300.png 300w, https:\/\/ventilation-maximum.com\/wp-content\/uploads\/2020\/12\/cropped-VMAX-301-12-BLACK-ver-8-FINAL-150x150.png 150w, https:\/\/ventilation-maximum.com\/wp-content\/uploads\/2020\/12\/cropped-VMAX-301-12-BLACK-ver-8-FINAL-270x270.png 270w, https:\/\/ventilation-maximum.com\/wp-content\/uploads\/2020\/12\/cropped-VMAX-301-12-BLACK-ver-8-FINAL-192x192.png 192w, https:\/\/ventilation-maximum.com\/wp-content\/uploads\/2020\/12\/cropped-VMAX-301-12-BLACK-ver-8-FINAL-180x180.png 180w, https:\/\/ventilation-maximum.com\/wp-content\/uploads\/2020\/12\/cropped-VMAX-301-12-BLACK-ver-8-FINAL-32x32.png 32w\" sizes=\"(max-width: 512px) 100vw, 512px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-custom-embed-play\" role=\"button\" aria-label=\"Play Video\" tabindex=\"0\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-eicon-play\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M838 162C746 71 633 25 500 25 371 25 258 71 163 162 71 254 25 367 25 500 25 633 71 746 163 837 254 929 367 979 500 979 633 979 746 933 838 837 929 746 975 633 975 500 975 367 929 254 838 162M808 192C892 279 933 379 933 500 933 621 892 725 808 808 725 892 621 938 500 938 379 938 279 896 196 808 113 725 67 621 67 500 67 379 108 279 196 192 279 108 383 62 500 62 621 62 721 108 808 192M438 392V642L642 517 438 392Z\"><\/path><\/svg>\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-30559563 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"30559563\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-20f59c7a\" data-id=\"20f59c7a\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-199e2089 elementor-widget elementor-widget-heading\" data-id=\"199e2089\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Understanding Attic Ventilation\n<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4b5efca5 elementor-widget elementor-widget-text-editor\" data-id=\"4b5efca5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tI think we can all agree that a roof is probably one of the most important parts of a home while at the same time being one of the most under looked. Attic ventilation is usually something that is misunderstood and not of main concern for the average homeowner, unless problems arise. On the other hand, attic ventilation goes hand in hand with having a healthy roof structure, increased roof system life span and reduced energy bills. <br> <br> A common misconception behind attic ventilation falls between the importance of having proper roof insulation to keep the home warm\/cool in the winter\/summer and the need to ventilate the open space above the insulation with outdoor air; how does this work?\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-30742381 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"30742381\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-5edecfd1\" data-id=\"5edecfd1\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-76452afd elementor-widget elementor-widget-heading\" data-id=\"76452afd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Why attic Ventilation is so important to your home\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-34262a1d elementor-widget elementor-widget-text-editor\" data-id=\"34262a1d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Let\u2019s begin by explaining why an open attic space needs venting. The first important aspect to understand is regarding attic insulation. Attic insulation is a major factor in maintaining a home\u2019s desired inside temperature at any given season. It is important to understand that insulation does not trap heat or cool air inside the home but rather slows down its migration through the walls and towards the outdoors or the attic space. Thermal insulation slows down the natural convection continuously happening in your home and allows you to have a better control on the energy you spend to heat or cool your living space.<\/p><p>During cold seasons, there will always be a migration of heat and humidity moving from inside the home towards the attic space. This heat and humidity will then get trapped inside the attic and condense on the roof deck if the attic does not have any ventilation. Condensation issues can lead to the creation of mold and mildew, water damages and structure deterioration. Additionally, if the heat and humidity is not vented out, the attic space will warm up which may also lead to ice damming on the roof, damaging the shingles while also leading to possible water damages.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-3e5d97c8\" data-id=\"3e5d97c8\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-75e4aa90 elementor-widget elementor-widget-image\" data-id=\"75e4aa90\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"512\" height=\"270\" src=\"https:\/\/ventilation-maximum.com\/wp-content\/uploads\/2021\/08\/icyhouse-en.jpeg\" class=\"attachment-large size-large wp-image-12582\" alt=\"\" srcset=\"https:\/\/ventilation-maximum.com\/wp-content\/uploads\/2021\/08\/icyhouse-en.jpeg 512w, https:\/\/ventilation-maximum.com\/wp-content\/uploads\/2021\/08\/icyhouse-en-300x158.jpeg 300w\" sizes=\"(max-width: 512px) 100vw, 512px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-3b508168 elementor-reverse-tablet elementor-reverse-mobile elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3b508168\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-797cc8e1\" data-id=\"797cc8e1\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-44023e3b elementor-widget elementor-widget-image\" data-id=\"44023e3b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"512\" height=\"341\" src=\"https:\/\/ventilation-maximum.com\/wp-content\/uploads\/2021\/08\/roof-en.jpeg\" class=\"attachment-large size-large wp-image-12567\" alt=\"Without proper ventilation, an overheating attic will increase air conditioning bills and is likely to reduce the lifespan of your entire roof system.\" srcset=\"https:\/\/ventilation-maximum.com\/wp-content\/uploads\/2021\/08\/roof-en.jpeg 512w, https:\/\/ventilation-maximum.com\/wp-content\/uploads\/2021\/08\/roof-en-300x200.jpeg 300w\" sizes=\"(max-width: 512px) 100vw, 512px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-60a44fb8\" data-id=\"60a44fb8\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2e0f9cd8 elementor-widget elementor-widget-text-editor\" data-id=\"2e0f9cd8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>During the warmer seasons, excess heat generated by the sun hitting the shingles and roof deck can cause the attic space to overheat if your home doesn\u2019t have proper attic ventilation. Once this happens, the heat from inside the attic space will migrate through the ceiling insulation and into your home, thus increasing your air conditioning energy bills. Additionally, the excessive heat can also cause premature wear and tear to the roof shingles or membrane and reduce the lifespan of your entire roof system.\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-28a2de14 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"28a2de14\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-23128b39\" data-id=\"23128b39\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3d259416 elementor-widget elementor-widget-heading\" data-id=\"3d259416\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"> The attic ventilation principle<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2f1c2aa9 elementor-widget elementor-widget-text-editor\" data-id=\"2f1c2aa9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tThe attic ventilation principle is straightforward, we need a given amount of air intake (situated at the bottom portion of the roof), commonly given by soffits, and a given amount of evacuation (situated at the top portion of the roof) to create air movement in the attic. <br class=\"line-break-vm\" \/><br class=\"line-break-vm\" \/>For sloped roofs, the ideal air flow is one that starts at the intake along the entire perimeter of the home and follows the roof deck all the way up to the exhaust units near the ridge. The entire roof deck of the home must be covered by this air movement so that there are no dead zones leading to possible condensation pockets. The cold or fresh air comes in from the intake vents and mixes with the hot\/humid air before it is evacuated outdoors. <br class=\"line-break-vm\" \/> <br class=\"line-break-vm\" \/>For flat roofs, the same principle is applied but we will want to position the evacuation units in a way that allows us to cover the entire roof deck depending on the location of the air intakes. Following this step, having a balanced system, fresh air to exhaust, is just as important as the positioning if you want to have the right amount of airflow in your attic space. The suggested NFA ratio is having a minimum of 50\/50 (intake\/exhaust) or 60\/40 (intake\/exhaust) when possible.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6cd7965d elementor-widget elementor-widget-image\" data-id=\"6cd7965d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"512\" height=\"384\" src=\"https:\/\/ventilation-maximum.com\/wp-content\/uploads\/2021\/08\/blueprint-en-v2.jpg\" class=\"attachment-large size-large wp-image-12586\" alt=\"The ventilation principle states that an attic should have a balanced amount of air intake and evacuation.\" srcset=\"https:\/\/ventilation-maximum.com\/wp-content\/uploads\/2021\/08\/blueprint-en-v2.jpg 512w, https:\/\/ventilation-maximum.com\/wp-content\/uploads\/2021\/08\/blueprint-en-v2-300x225.jpg 300w\" sizes=\"(max-width: 512px) 100vw, 512px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-de10df3 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"de10df3\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-2206f1c1\" data-id=\"2206f1c1\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-57c6975e elementor-widget elementor-widget-heading\" data-id=\"57c6975e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Attic ventilation calculation<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2aab99f elementor-widget elementor-widget-text-editor\" data-id=\"2aab99f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tTo determine the required NFA, a ratio of 1\/300 for sloped roofs and 1\/150 for flat roofs (slopes 2\/12 and less) is usually recommended in Canada but please refer to the requirements of your local building codes. This ratio represents the amount of net free area of ventilation to apply to a roof in reference to the amount of insulated ceiling surface area giving into the attic space. For example, a sloped roof having a ceiling surface area of 30ft x 30ft (900ft<sup>2<\/sup>) should have the equivalent of 3ft<sup>2<\/sup> (900ft<sup>2<\/sup> \/300) of open ventilation area to properly ventilate the roof. The calculated NFA should then be applied to the recommended intake\/exhaust ratio as previously described. For additional help, please consult <strong><span style=\"text-decoration: underline;\"><a href=\"\/en\/calculator\/\">our online calculator<\/a><\/span><\/strong>.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-638ab06d\" data-id=\"638ab06d\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1b6b5f68 elementor-cta--skin-cover elementor-animated-content elementor-bg-transform elementor-bg-transform-zoom-in elementor-widget elementor-widget-call-to-action\" data-id=\"1b6b5f68\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"call-to-action.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-cta\">\n\t\t\t\t\t<div class=\"elementor-cta__bg-wrapper\">\n\t\t\t\t<div class=\"elementor-cta__bg elementor-bg\" style=\"background-image: url(https:\/\/ventilation-maximum.com\/wp-content\/uploads\/2020\/12\/calc-stock-1.jpeg);\" role=\"img\" aria-label=\"calc-stock-1\"><\/div>\n\t\t\t\t<div class=\"elementor-cta__bg-overlay\"><\/div>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-cta__content\">\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<h2 class=\"elementor-cta__title elementor-cta__content-item elementor-content-item elementor-animated-item--enter-from-left\">\n\t\t\t\t\t\tCalculator\t\t\t\t\t<\/h2>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-cta__description elementor-cta__content-item elementor-content-item elementor-animated-item--enter-from-left\">\n\t\t\t\t\t\tUse our unique calculator to determine what materials will be required for your project.\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-cta__button-wrapper elementor-cta__content-item elementor-content-item elementor-animated-item--enter-from-left\">\n\t\t\t\t\t<a class=\"elementor-cta__button elementor-button elementor-size-\" href=\"\/en\/calculator\/\">\n\t\t\t\t\t\tClick Here\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4be519f elementor-align-center elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"4be519f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"\/en\/calculator\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"icon icon-calculator-1\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Calculator<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-738f0440 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"738f0440\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6cd57f13\" data-id=\"6cd57f13\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-411396a8 elementor-widget elementor-widget-heading\" data-id=\"411396a8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Is my attic properly ventilated?\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5c8d9b42 elementor-widget elementor-widget-text-editor\" data-id=\"5c8d9b42\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tRealistically, it is impossible to consistently maintain the attic space at the same temperature as the outdoors. An attic space will naturally heat up during the day and there\u2019s nothing we can do about it, but we can control how fast it cools down. Having proper attic ventilation means that your attic <span style=\"text-decoration: underline;\"><strong>ALWAYS<\/strong><\/span> cools down overnight to reach a temperature that is within a few degrees of the outdoor temperature. <br class=\"line-break-vm\" \/><br class=\"line-break-vm\" \/>A simple test to verify this is to install a thermometer in your attic space and check to see if the temperature in your attic is within the given range of the outdoor temperature near sunrise hours. There are on the market, at affordable prices, wireless thermometers that can send you hourly readings on a free app to your phone. If you\u2019d like to proceed with this test, I strongly suggest you purchase one of these and verify the situation over the course of 1-2 weeks before concluding a diagnostic. If your roof doesn\u2019t cool down within the given range, chances are that your home has an attic ventilation problem and actions should be taken to resolve the issue.\n\nAttic ventilation is having the proper ratio and positioning of fresh air intake and exhaust to remove any excess heat and humidity from the attic. A roof that can\u2019t cool down will create different types of issues given the season. Attic ventilation is necessary to keep your home comfortable, operating efficiently and in good condition.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-19c39261 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"19c39261\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-481b80de\" data-id=\"481b80de\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-301257d9 elementor-widget elementor-widget-text-editor\" data-id=\"301257d9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tFeel free to contact us for more information on attic ventilation:\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-1bf78f67\" data-id=\"1bf78f67\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-762fd53c elementor-align-left elementor-widget elementor-widget-button\" data-id=\"762fd53c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-lg\" href=\"\/en\/contact-us\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Contact Us<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-707807a5 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"707807a5\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4bc694d4\" data-id=\"4bc694d4\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1f73af7f elementor-widget elementor-widget-text-editor\" data-id=\"1f73af7f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tAuthor : Jonathan Ramsay Massicotte, P.eng<br \/>\n\tTechnical and development Director at Ventilation Maximum\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Understanding Attic Ventilation Understanding Attic Ventilation I think we can all agree that a roof is probably one of the most important parts of a home while at the same time being one of the most under looked. Attic ventilation is usually something that is misunderstood and not of main concern for the average homeowner, [&hellip;]<\/p>\n","protected":false},"author":439,"featured_media":656,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[143],"tags":[],"class_list":["post-12506","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-attic-ventilation-tips"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Understanding Attic Ventilation | Ventilation Maximum<\/title>\n<meta name=\"description\" content=\"Protect your roof from premature damage during cold and warm seasons by having balanced air intake and evacuation with your attic ventilation. 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